Title :
0.5 V multi-phase digital controlled oscillator with smooth phase transition circuit
Author :
Johari, Abul Hasan ; Kumaki, Satoshi ; Matsubara, Takeshi ; Hayashi, Isamu ; Ishikuro, Hiroki
Author_Institution :
Dept. of Electron. & Electr. Eng., Keio Univ., Yokohama, Japan
Abstract :
In this paper we have shown the design of a 0.5 V multi-phase digital controlled oscillator (DCO) in 65-nm CMOS. The DCO generates 32 phases and achieved output frequency range from 0.1MHz to 128MHz with maximum power consumption of 0.28μW/MHz in Cadence spectre circuit simulations. To prevent glitch during phase switching, the circuit for smooth phase transition is proposed and successfully demonstrated in circuit simulation.
Keywords :
oscillators; Cadence spectre circuit simulation; frequency 0.1 MHz to 128 MHz; multiphase digital controlled oscillator; phase switching; smooth phase transition circuit; voltage 0.5 V; Arrays; Monitoring; Power demand; Ring oscillators; Switches; Tuning; Array Oscillator; DCO; Multiphase; Multiplexer; Ultra-Low Voltage;
Conference_Titel :
Circuits and Systems (APCCAS), 2010 IEEE Asia Pacific Conference on
Conference_Location :
Kuala Lumpur
Print_ISBN :
978-1-4244-7454-7
DOI :
10.1109/APCCAS.2010.5775040
